Senior Network Engineer (Infrastructure & Cloud)

The Information Technology (ITS) team at CRA is a Global team of 40 professionals dedicated to enhancing, maintaining, and developing the firm's technology infrastructure and security. We are seeking an experienced Network Engineer to join our small global networking team. The successful candidate will bring in-depth, hands-on expertise in planning, designing, implementing, documenting, securing, and troubleshooting enterprise network systems across campus, data center, wireless, WAN, and cloud environments. This position supports day-to-day operations and maintenance, advances security initiatives, and collaborates with IT colleagues and business stakeholders on a global scale.

Responsibilities

Design, install, configure, test, document, and maintain secure network infrastructure across on-premises and cloud environments; Identify, diagnose, and resolve complex network, wireless, firewall, DNS, and connectivity issues; Produce and maintain Microsoft Visio network diagrams, implementation plans, configuration standards, and as-built documentation; Administer and use Nexus Dashboard, Catalyst Center, Infoblox, and other management platforms for visibility, configuration, assurance, and lifecycle activities; Maintain accurate configuration records, inventories, circuit information, support documentation, and vendor contacts; Plan and execute upgrades while minimizing service disruption and maintaining tested rollback procedures; Develop, implement, and maintain policies, procedures, and training plans for network resource administration, appropriate use, and disaster recovery; Ensure network hardware, software, firmware, and configurations are current, supportable, and secure; Monitor and test network performance and provide performance statistics, reports, and recommendations; Coordinate with internal teams and external vendors to deliver projects and resolve incidents; Coordinate across other IT teams and across the firm; some travel to other CRA offices will be expected; Some out-of-hours and weekend work will be required for scheduled upgrades and in response to unexpected outages

Requirements

Bachelor's degree (Master's desirable) in Computer Science, Information Systems or related discipline; 4-6 years relevant work experience, preferably in a professional services environment; Current Cisco certification at the CCNA level or a demonstrated track record of maintaining Cisco certifications at or above the CCNA level is required; CCNP preferred, relevant Microsoft Azure and AWS certifications highly desired; Demonstrated knowledge of secure LAN/WAN, campus, data center, wireless, and cloud networking operations; Hands-on experience designing, implementing, and supporting networking in both Microsoft Azure and Amazon Web Services (AWS); Hands-on experience with Cisco Nexus data center switching, Cisco Catalyst switching, Cisco Catalyst wireless, and Cisco Firepower firewalls; Experience with network management and automation platforms, including Cisco Nexus Dashboard, Cisco Catalyst Center, and Infoblox; Demonstrated skill designing and documenting logical and physical networks using Microsoft Visio; Strong practical knowledge of Cisco enterprise networking platforms across LAN/WAN, data center, wireless, firewall, and cloud-connected environments; Proficiency with network protocols and technologies, including Spanning Tree, DNS, DHCP, BGP, OSPF, HSRP, LACP, SNMP, NTP, IPsec VPN, and QoS; Experience creating, reviewing, implementing, and troubleshooting firewall policies, preferably using Cisco Firepower; Ability to create and maintain accurate network topology, rack, connectivity, and as-built documentation using Microsoft Visio; Ability to propose and clearly communicate changes to existing network topology that improve availability, security, performance, and operational supportability; Familiarity with ITIL change management practices, implementation planning, rollback planning, and pre-change risk assessment; Strong troubleshooting skills across Layers 1 through 7, including packet capture and network performance analysis; Must be comfortable in customer-facing scenarios and effectively collaborating in cross-functional technical teams; Self-motivated, with a strong ability to prioritize and execute tasks in a high-pressure environment; Ability to travel to other offices and execute project plans with minimal oversight

Nice to have

Demonstrated strong knowledge with Microsoft Azure networking, including virtual networks, routing, network security controls, and hybrid connectivity; Demonstrated strong knowledge with Amazon Web Services networking, including VPCs, routing, security controls, and hybrid connectivity; Cisco Nexus data center switches and Nexus Dashboard; Cisco Catalyst switches, Catalyst wireless infrastructure, and Catalyst Center; Cisco Firepower firewalls; Palo Alto firewall experience is also valued; Infoblox DNS, DHCP, and IP address management (IPAM); Cisco ISE and 802.1X network access control; Cisco Catalyst SD-WAN; Kemp LoadMaster load balancers; Cisco Umbrella; PKI, certificate lifecycle management, domain registration, DNS, and 802.1X fundamentals

Benefits

Skills development programs including technical training, presentation skills, internal seminars, and career mentoring and performance coaching; Comprehensive total rewards program with superior benefits package; Wellness programming supporting physical, mental, emotional and financial well-being; In-house immigration support for foreign nationals and international business travelers; Eligible for additional bonus incentive compensation; Medical, dental, and vision insurance; 401(k) retirement plan with employer match; Life and disability insurance; Paid time off (vacation, sick leave, holidays); Paid parental leave; Employee assistance resources; Commuter benefits